[clang] [CIR] Upstream support for range-based for loops (PR #138176)

[Erich Keane via cfe-commits]

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@@ -190,6 +190,117 @@ void l3() {
 // OGCG:   store i32 0, ptr %[[I]], align 4
 // OGCG:   br label %[[FOR_COND]]
 
+void l4() {
+  int a[10];
+  for (int n : a)
+    ;
+}
+
+// CIR: cir.func @_Z2l4v
+// CIR:   %[[A_ADDR:.*]] = cir.alloca !cir.array<!s32i x 10>, !cir.ptr<!cir.array<!s32i x 10>>, ["a"] {alignment = 16 : i64}
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erichkeane wrote:

These CHECK lines are REALLY overly specific with the alignment... we should probably trim these to just the important data.

https://github.com/llvm/llvm-project/pull/138176